Using a GS-R ECU side wiring harness?

I am wondering about using a GS-R ECU side wiring harness to add the VTEC wires for my GS-R swap. I have a 93' Civic CX and I want the wiring to be especially clean/stock looking. I cannot seem to find the proper tool to use to add wires into my existing ECU connector and I wonder if anyone knows about using a GS-R harness instead. Is this idea overly complex? Has anyone done this? Any help or ideas would be great.

you don't need any special tool to take pins out of the ecu clips, I got them out with a pocket knife and some care and patience

I don't think that changing the whole harness is a good solution to your problem, it is a pain in the ass to get even one wire through the fire wall in the spot where the ecu wires go through, I couldn't imagine doing the whole harness including plugs, plus there are alot of other wires connected to that harness that you would have to cut and splice and.....